Window ventilator



Nov. 24, 1925- 1,563,003

' WILKE WINDOW VENTILATOR Filed May 22. 1924 3n umlfoz Patented Nov. 24, 1925.

warren srarss tastes PATENT OFFICE.

CHRISTOPHER WILKE, OF SEATTLE, WASHINGTON, ASSIGNOR OF FORTY-NINE PER CENT T0 BQY TAYLOR, O35 SEATTLE, VfAfiHINGTON.

WINDOW VENTILATOR.

Application filed. May 2 To all whom it may concern:

Be it known that I, CHRISTOPHER VVILKE, a citizen of the United States of America, and resident of the city of Seattle, in the county of King and State of Washington,

have invented certain new and useful lm provements in lVindow Ventilators, of which the following is a specification.

My invention relates to window ven-- tilators of that type which employ a frame insertible into the casing of a window and which serve as deflectors to direct the incoming air upwardly to thereby avoid drafts acting upon the occupants of a room.

The object of my invention is to provide a simple and convenient construction of this kind which will permit of free raising and lowering of the windows within certain limits, but which when in place will pro vide a secure closure preventing the window being raised above a predetermined level and preventing any access to the room through the window.

()ther objects of my invention may be determined from a study of the following description and the drawings accompanying the same.

The features of my invention which I desire to protect by a patent will be defined by the claims terminating this specification. i I

Theaccompanying drawings show my invention in the form of construction which I now prefer to use.

Figure 1' is a transverse sectional view, the line of section being through the median portion of the device and the window sash.

Figure 2 is a top plan view showing one end of my device, with the window sash and casing in section.

Figure 3 is a section showing in detail the construction of my device taken on the line 3-3 of Figure 2, the plane of section being just inside of the casing.

The frame of my device is of triangular cross section. It is designed that this frame shall be of such a width in the general plane of the window, as to snugly fill the space between the window casing. The vertical face of the frame is placed parallel with and close to the window sash. The opposite face inclines into the room and upwardly, thus forming a plate for deflecting the in coming air upwardly. The end Walls or 1924's Serial N0. 715,031.

sides are of triangular outline. The de-- tails of construction of the frame proper Irlijy be varied as desired and found suita e.

The frame has, among its chief members, a bottom bar 2 which is designed to rest upon the window sill 12. Also two end walls of triangular shape are provided, with the apex of the triangle downward. A. transversely extending bar 21 is located at the upper inner corner of the frame and connects the two end walls. These walls are preferably further connected by a tie rod 43 or some equivalent construction. The rod 48 as illustrated is located close to the window and near the upper edge of the end walls 4-.

The main body of the inner inclined wall which forms the air deflector, is preferably composed of a plate 20 of glass, suitably mounted in the body of the device acting as a frame- This glass also serves as a stop for any rain which may drive through the window when open. Such rain, running to the bottom of the glass, will be discharged outside the window sill 12. To insure free discharge of such water either the lower bar 30 of the screen frame, or the lower bar 2 of the main frame of the device, should be provided with transverse grooves as 31 to permit free discharge of the water.

The vertical outer face of the ventilator frame is provided with a screen 3, and the vertical side edges of this screen are mounted to slide in grooves 4L0 formed in the end walls 4. The screen, is however, normally held down so that it may not be raised, by a bar 5, which extends between the end walls 4 and which is held down in fixed position bysome suitable means. The construction illustrated provides a down wardly extending lug 50 carried by the bar 5 which enters and fills a groove 41 extending transversely across the upper edge of the end wall, which groove may, and prefer ably, is alined with the screen-receiving groove 40. This prevents side movement of the'stop bar 5 and thus prevents its dis placement in one direction. The means employed for holding the bar 5 down upon the top of the screen may vary. That ll; lustrated consists of a spring bar 6 secured by its lower end to the outer face of the end wall .4 and provides at its upper end with a lateral Qfi ad pted to snugly engage with the upper surface of the bar 5, as has been illustrated in Figure 3. This spring should have suflicient resiliency as to permit of itsbeing displaced endwise of the-bar 5 sufiieient to permit'raisingof the bar.

The outer side-edge'of the'bar 5, that is the edge which is towards the window sash, projects to a point where it is very close to the glass pane 11 of the sash. It is, therefore, in position to engage the lower bar 10 of the window sash and prevent its being raised above this point. This makes it possible to leave the sash in raised position, which otherwise might not be safe and would permit the entrance of burglars, witlr out there being any chance of such entrance. lhe bar 5 securely holds down the screen 3 andprevents raising of this suliicient to insert ahand. While, of course, the screen might be cut, yet the device as a whole is so secured as to make it difficult for unlawful One face of the casing, while bolt enters a-keeper 70 which is secured to the outer-face of the end wall irnother bolt 7 of the same character is provided on the opposite end 'ofthe-aevice. T s i locatedat about the'middle of the heigl the device, places it out of reach of'any one who might endeavor to reach it from the outside.

To accommodate the window shade S I provide the upper edge of the side walls l with agroove 92, into which the bar at the'lower edge of the shade may enter. This is locatedelose up-to the inner face of the screen so that wind entering the opened window, when this device in plae will notbe aptto blow the shade about.

Unless the lower 'endof the shade were held close to the screen, wind entering the ventilator would blow the shade about, causing noisy [lapping and injuring the shade.

This device, being secured in place by two ordinary door bolts 7, makes it possible to secure it in; place and removeitvery quickly. lVhen in place and the window raised, the'access of air to the room is' possible without the entrai'ice of rain and alsowvithout the probability of unwarranted entrance by prowlers. The whole device is simple and may be manufactured at a very reasonable cost. Being provided with glass, 20, it does not materially shut outfhe light.

VJ hat Iclaim as my invention is:

1. A window ventilating device comprising f ame adapted to be secured within a 3f and havi 5 an inclined air inner wall, side Ills and a screen forming the vertical outer wall. said side walls having guiding grooves for holding the side edges of the screen and opening freely at their upper ends to permit upwariil removal of the screen, a barextendiug along the top edge of the screen and having interlocking engagement with the frame sides and also having its outermost edge projecting to prevent the window sash being raised above it.

:2. A window ventilating device comprising a box-like frame adapted to be placed in a window opening against the inner face of the sash, said frame having side walls adapted to lit againstlthe casing faces at thev sides ofthe window opening and having vertical screeirreceiving guides located clo-1c to the inner face of the sash, a screen slidable in said guides, a bar fixedly connecting the upper ends of the side walls just within the screen and a stop bar havingat its ends a lug-and-socket engagement with the side walls and projecting at its outer edge to overlap {the lower bar of the sash to pre vent raisingiof the sash above this part, and manuallyreleasable catches preventing accideitital releasing of said bar.

3. A window ventilating device conugrising a box-like frame having triangular side walls and adapted to be placed in a window opening against the inner face of the sash, the face/of said frame next to the sash having therein a screen and the side walls having screene'eceilvingvguides permitting raising ofthc screen, a bar fixedly connacting the upper ends ofthe side walls just within thescreen and astop bar having at its ends a lug-and-socket engagement withthe. side walls andprojecting at its outer edge to overlapth'e lower bar ofthe sash to pre vent raising ofthe sash above this part, a spring bar secured by its lower end "to the outer face ofeach of the side walls and having an angle bend at its upper end forming a hook adapted to normally exteml over the ends ofsaid stop bar to hold it down.

i. A window ventilating dev e comprising a frame havingtriangular side walls, said frame being adapted to be secured in the window opening just inward of the lower sash, said frame havinga screen forming its outer vertical face and the side-walls having screen receiving grooves permittingraising of thescreen, theside walls also each having a groove extending across its upper edge substantially in register with the screen, a, stopbar extending over the screen and having lugs extending downward into saidgrooves in the said upper edge of the side walls, and catches carried by the fran'ie and engaging 'the'ends of the stop bar to prevent its being raised.

Signed at Seattle, King County, ash iupjton, this 14th day of May, 1.924.

CHRISTOPHER lVlLK ll,

lie 

